/ NEW ARTICLE: Petrohrad - Czech Bouldering Paradise

Sixty kilometres west of Prague lies a beautiful area of rolling hills...

"There are thousands of problems in this area with a huge potential for more development. The rock is exceptional quality grey granite with high friction and a huge variety of climbing styles. The grades vary from the very easy to the near impossible. Adam Ondra climbs here often and there are many high standard boulder problems up to Font 8B, many of them opened by Ondra himself..."

My mum and dad gave me the book for birthday to try and get me to come over to czech more often. The climbing looks sweet... if a bit green. Also, apparently, "using of poof is prohibited".
Does anyone know if the grades used are Font? Scoured the book but this isn't stated anywhere and I'm not sure what the convention is in czech.